JPH0785885A - Rectangular battery - Google Patents
Rectangular batteryInfo
- Publication number
- JPH0785885A JPH0785885A JP5253813A JP25381393A JPH0785885A JP H0785885 A JPH0785885 A JP H0785885A JP 5253813 A JP5253813 A JP 5253813A JP 25381393 A JP25381393 A JP 25381393A JP H0785885 A JPH0785885 A JP H0785885A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- strip
- electrode
- wound
- belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、角形電池に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prismatic battery.
【０００２】[0002]
【従来の技術とその課題】角形電池は、円筒形電池に比
較して機器収納時のスペース効率が優れている。しか
し、従来の角形電池は、短冊状電極を数枚から数十枚積
層した構成を有していたので、各電極と電池端子との電
気的接続が煩雑であった。2. Description of the Related Art A prismatic battery is superior in space efficiency when storing a device as compared with a cylindrical battery. However, the conventional prismatic battery has a structure in which several to several tens of strip-shaped electrodes are stacked, and thus the electrical connection between each electrode and the battery terminal is complicated.
【０００３】そこで、発明者は、帯状の正極板と負極板
とをセパレーターを介して長円状に巻回して角形電池ケ
ースに収納した角形電池を用いて上記欠点を改善するこ
とを試みた。本構成の電池は、各電極からの電極リード
は最少１本で良いので極めて生産性に優れている。Therefore, the inventor has attempted to solve the above drawbacks by using a prismatic battery in which a strip-shaped positive electrode plate and a negative electrode plate are wound in an elliptical shape with a separator and housed in a prismatic battery case. The battery of this structure is extremely excellent in productivity because the electrode lead from each electrode may be at least one.
【０００４】しかし、本角形電池においても下記のよう
な新たな問題がある。すなわち、従来の円筒形電池にお
ける帯状電極の巻回とは異なり、角形電池では、長円状
に巻回するので、特に屈曲面の曲率がもっとも小さい巻
き出し部の円弧部で電極が著しい屈曲をうける。この結
果、屈曲部での活物質層の剥離脱落や電極グリッドの切
断がおこる。However, the prismatic battery also has the following new problems. That is, unlike the winding of the strip electrode in the conventional cylindrical battery, in the prismatic battery, since the winding is performed in an elliptic shape, the electrode is not significantly bent particularly in the arc portion of the unwinding portion where the curvature of the bent surface is the smallest. box office. As a result, peeling off of the active material layer and cutting of the electrode grid occur at the bent portion.
【０００５】これを防ぐためには、できるだけ厚い巻芯
を用いて、巻出し部の屈曲部の曲率を大きくしてやれば
良い。しかし、この場合には、電池内に電極が存在しな
い部分が多くなるので、特に小型薄形の角形電池におい
ては、著しくエネルギー密度が低下するという問題があ
った。To prevent this, the curvature of the bent portion of the unwinding portion should be increased by using a winding core as thick as possible. However, in this case, there is a problem that the energy density is remarkably reduced, especially in a small and thin prismatic battery, because the number of portions where the electrode does not exist in the battery increases.
【０００６】[0006]
【課題を解決するための手段】本発明は、帯状の正極板
と帯状の負極板とをセパレーターを介して長円状に巻回
して角形電池ケースに収納した角形電池において、短冊
状電極の回りを巻回する帯状電極からなる電池発電要素
を有することを特徴とする。The present invention relates to a prismatic battery in which a strip-shaped positive electrode plate and a strip-shaped negative electrode plate are wound in an elliptical shape with a separator interposed therebetween and housed in a prismatic battery case. It is characterized in that it has a battery power generation element consisting of a strip electrode wound around.
【０００７】[0007]
【作用】本発明の角形電池は、長円状渦巻電極群の屈曲
部の曲率が著しく小さい電極巻出し部に短冊状電極を用
いている。すなわち正負極の短冊状電極をセパレーター
を介して数枚積層したものを巻芯とし、その上に帯状電
極を巻回するか、もしくは、一方の電極をすべて帯状電
極とし、巻出し部分にのみ数枚の短冊状相手極を用い、
その後帯状相手極を巻回した構成を有している。In the prismatic battery of the present invention, the strip-shaped electrode is used in the electrode unwinding portion where the curvature of the bent portion of the elliptical spiral electrode group is extremely small. That is, several positive and negative electrode strip electrodes are laminated with a separator as a core, and a strip electrode is wound on the core, or one of the strip electrodes is a strip electrode and only the unrolled portion is covered with several strips. Using a strip of opposite poles,
After that, it has a structure in which a strip-shaped opposite pole is wound.
【０００８】この結果、活物質層とグリッドとの接着強
度が低い電極、もしくはグリッドの折れ曲がり強度が低
い電極を用いても活物質層の剥離・脱落やグリッドの切
断などが無い。As a result, even if an electrode having a low adhesive strength between the active material layer and the grid or an electrode having a low bending strength of the grid is used, the active material layer is not peeled or dropped or the grid is not cut.
【０００９】本発明の角形電池では、巻芯部分の短冊状
電極と帯状電極とを電気的に接続するという工程が発生
するので、従来の帯状電極のみを用いた角形電池に比較
して生産性は低下する。しかし、短冊電極のみからなる
従来の角形電池に比較すれば作業の煩雑さはきわめて少
なく、また帯状電極のみからなる従来の角形電池に比較
して、巻芯部分にも電極を配して電池エネルギー密度を
向上させつつ、活物質の脱落に起因する電池の短絡やグ
リッド切断に起因する容量低下を防止できる点で著しく
優れている。In the prismatic battery of the present invention, a process of electrically connecting the strip electrode and the strip electrode of the winding core portion occurs, so that the productivity is higher than that of the conventional prism battery using only the strip electrode. Will fall. However, compared to a conventional prismatic battery consisting of only strip electrodes, the work is much less complicated, and in comparison with a conventional prismatic battery consisting of only strip electrodes, an electrode is also placed on the core part to save battery energy. It is remarkably excellent in that it is possible to prevent the short circuit of the battery due to the dropping of the active material and the capacity decrease due to the disconnection of the grid while improving the density.
【００１０】[0010]
【実施例】以下に本発明の好適な実施例を示す。EXAMPLES Preferred examples of the present invention will be shown below.
【００１１】正極を次のように作製した。平均粒径 6μ
m に粉砕した LiCoO2 を８９重量部、導電助材のケッチ
ェンブラックを２重量部と結着剤のポリフッ化ビニリデ
ンを９重量部とを混合し、N-メチル-2- ピロリドンを加
えてペースト状にし、厚さ20ミクロンのアルミニウム箔
に片面厚さが80μm になるように塗布した後、乾燥、圧
延、切断して厚さが0.150mm 、幅が40mmの帯状正極板１
と厚さが0.150mm 、幅が40mm、長さが30mmの短冊状正極
板２を作製した。A positive electrode was prepared as follows. Average particle size 6μ
89 parts by weight of LiCoO 2 crushed to m, 2 parts by weight of Ketjen black as a conductive additive and 9 parts by weight of polyvinylidene fluoride as a binder were mixed, and N-methyl-2-pyrrolidone was added to paste. And apply it to a 20-micron-thick aluminum foil so that the thickness on one side is 80 μm, then dry, roll, and cut to a strip-shaped positive electrode plate with a thickness of 0.150 mm and a width of 40 mm 1.
A strip-shaped positive electrode plate 2 having a thickness of 0.150 mm, a width of 40 mm and a length of 30 mm was produced.
【００１２】負極を次のように作製した。平均粒径25μ
m の鱗片状人造黒鉛と平均粒径25μm の球状黒鉛とを重
量比で3:1 に混合した黒鉛混合物86重量部と結着剤のポ
リフッ化ビニリデン14部とを混合し、溶剤のN- メチル
-2- ピロリドンを加えてペースト状にし、厚さ18μm の
銅板に片面厚さが70μm になるように塗布した後、乾
燥、圧延、切断して厚さが0.110mm で幅が41mmの帯状負
極板３と厚さが0.110mmで幅が41mmで長さが31mmの短冊
状負極板４を作製した。A negative electrode was prepared as follows. Average particle size 25μ
86 parts by weight of a graphite mixture prepared by mixing flake artificial graphite of m and spheroidal graphite having an average particle diameter of 25 μm in a weight ratio of 3: 1 and 14 parts of polyvinylidene fluoride as a binder were mixed, and N-methyl solvent was mixed.
-2-Pyrrolidone is added to form a paste, and it is applied on a copper plate with a thickness of 18 μm to a thickness of 70 μm on one side, then dried, rolled and cut to a strip negative electrode plate with a thickness of 0.110 mm and a width of 41 mm. 3 and a strip-shaped negative electrode plate 4 having a thickness of 0.110 mm, a width of 41 mm and a length of 31 mm was produced.
【００１３】上記の正極板１，２および負極板３，４を
用いて本発明の電池に用いる電池発電要素を作製した。A battery power generation element for use in the battery of the present invention was produced using the positive electrode plates 1 and 2 and the negative electrode plates 3 and 4 described above.
【００１４】図１は、試作した電池発電要素の断面図で
ある。図に示すようにまず帯状の負極３と短冊状の正極
２（３枚）とを27μm 厚さの微多孔膜ポリエチレンセパ
レーター５を介して巻回し、その後、帯状正極１を前記
の帯状の負極３と共に巻回して発電要素（ア）を試作し
た。FIG. 1 is a sectional view of a prototype battery power generation element. As shown in the figure, first, the strip-shaped negative electrode 3 and the strip-shaped positive electrode 2 (three sheets) are wound around the 27 μm-thick microporous polyethylene separator 5, and then the strip-shaped positive electrode 1 is wound on the strip-shaped negative electrode 3 described above. A power generation element (a) was prototyped by winding with.
【００１５】また、４枚の短冊状負極板４と３枚の短冊
状正極板２とをセパレーター５を介して積層し、これを
巻芯としてその外側に帯状負極３と帯状正極１とを巻回
して発電要素（イ）を試作した。Further, four strip-shaped negative electrode plates 4 and three strip-shaped positive electrode plates 2 are laminated with a separator 5 in between, and the strip-shaped negative electrode 3 and the strip-shaped positive electrode 1 are wound around the core as a core. It was rotated and a power generation element (a) was prototyped.
【００１６】図２は、本発明の一実施例である角形電池
を示す。実施例電池の寸法は、厚さ7.8mm 、幅40mm、長
さ48mmである。６は70μm のPPフィルムを片面に接着し
他の面に絶縁と表面保護を兼ねた約 8μm の塗装膜を備
えた鋼板を樹脂フィルム面が側になるように成形してな
る角形容器である。７は同じ鋼板を樹脂フィルムが内面
になるように成形してなる角形容器蓋であり、６の容器
と二重巻き締め封口により封口されている。容器内に
は、前記の電池発電要素８が収納されている。容器蓋８
にはガスケット９を介してステンレス製リベット端子１
０が２個カシメ固定されている。それぞれのリベット端
子は、正極板および負極板と電池内部で電気的に接続さ
れている。１１はゴム製の弁体を備えた安全弁である。
電解液は、エチレンカーボネートとジメチルカーボネー
トとの１：１混合物に 0.03 mol のLiClO4 と0.97mol
のLiPF6 を溶解したものを用いた。FIG. 2 shows a prismatic battery which is an embodiment of the present invention. The dimensions of the example battery are 7.8 mm thick, 40 mm wide and 48 mm long. Reference numeral 6 is a rectangular container formed by adhering a 70 μm PP film on one surface and forming a steel sheet with a coating film of about 8 μm on the other surface for insulation and surface protection, with the resin film side facing up. Reference numeral 7 denotes a rectangular container lid formed by molding the same steel plate so that the resin film is on the inner surface, and is sealed with the container of 6 and a double winding sealing. The battery power generating element 8 is housed in the container. Container lid 8
The stainless steel rivet terminal 1 through the gasket 9
Two 0s are fixed by crimping. Each rivet terminal is electrically connected to the positive electrode plate and the negative electrode plate inside the battery. Reference numeral 11 is a safety valve having a rubber valve body.
The electrolyte was 0.03 mol LiClO 4 and 0.97 mol in a 1: 1 mixture of ethylene carbonate and dimethyl carbonate.
Of LiPF 6 was prepared by dissolving.
【００１７】発電要素（ア）を備えた電池を本発明の角
形電池（Ａ）とし、発電要素（イ）．を備えた電池を本
発明の角形電池（Ｂ）とする。A battery provided with a power generating element (a) is referred to as a prismatic battery (A) of the present invention, and the power generating element (a). The battery provided with is the prismatic battery (B) of the present invention.
【００１８】つぎに帯状電極だけからなる以外は、上記
本発明の角形電池と同様な角形電池を次のように試作し
た。まず、1.2mm 厚さのアルミニウム製巻き芯を用いて
帯状電極を巻回し、電池発電要素を試作した。この電池
発電要素から巻き芯を抜き取って、押しつぶし電池容器
に格納した電池を比較のための従来の角形電池（Ｃ）と
する。また、アルミニウム巻き芯を備えたままで電池容
器に格納した電池を従来の角形電池（Ｄ）とする。Next, a prismatic battery similar to the prismatic battery of the present invention was manufactured as follows except that it was composed of only strip electrodes. First, a 1.2 mm thick aluminum winding core was used to wind a strip electrode, and a battery power generation element was prototyped. The battery core extracted from this battery power generating element and stored in a crushed battery container is used as a conventional prismatic battery (C) for comparison. Further, a battery stored in a battery container with the aluminum core still provided is a conventional prismatic battery (D).
【００１９】上記の４種類の電池（Ａ）、（Ｂ）、
（Ｃ）、（Ｄ）をそれぞれ５０個試作して放電容量のば
らつきを調べた。この時、試験は室温でおこない、充電
は100mAで4.2Vまでおこない、放電は400mA で2.7Vまで
行った。この結果を表１に示す。The four types of batteries (A), (B),
Fifty (C) and (D) were made as prototypes and the variation in discharge capacity was examined. At this time, the test was performed at room temperature, charging was performed at 100mA to 4.2V, and discharging was performed at 400mA to 2.7V. The results are shown in Table 1.
【００２０】[0020]
【表１】 本発明の電池（Ａ）、（Ｂ）に比較して従来の電池
（Ｃ）は、放電容量のばらつきが大きいことがわかる。
解体検査の結果、容量が少ない電池は、巻回した帯状電
極を押しつぶして電池容器に格納した際に、電極が切断
されたり、活物質層が剥離して充放電できなくなってい
る部分があった。抜き取り解体検査の結果、電池（Ａ）
や電池（Ｂ）には、このような不具合は認められなかっ
た。[Table 1] It can be seen that the conventional battery (C) has a larger variation in discharge capacity than the batteries (A) and (B) of the present invention.
As a result of the disassembly inspection, when the battery with a small capacity was crushed and stored in the battery container after crushing the wound strip electrode, there was a part where the electrode was cut or the active material layer was peeled off to prevent charging and discharging. . Battery (A) as a result of sampling inspection
No such defects were found in the battery and the battery (B).
【００２１】また、電池（Ｄ）は、他の電池に比較して
放電容量が少ない。これは発電要素に1.2mm 厚さの巻き
芯を備えているので他の電池に比較して電極部分が少な
くなっているためである。Further, the battery (D) has a smaller discharge capacity than other batteries. This is because the power generation element is equipped with a winding core with a thickness of 1.2 mm, so the number of electrodes is smaller than in other batteries.
【００２２】[0022]
【発明の効果】上述のごとく本発明により、活物質層の
剥離・脱落やグリッドの切断などが無く、かつ、エネル
ギー密度の高い角形電池を得ることができる。As described above, according to the present invention, it is possible to obtain a prismatic battery having a high energy density without peeling or dropping of the active material layer or cutting of the grid.
【図１】本発明の角形電池の電池発電要素を示した図。FIG. 1 is a diagram showing a battery power generation element of a prismatic battery of the present invention.
【図２】本発明の一実施例である角形電池を示した図。FIG. 2 is a diagram showing a prismatic battery according to an embodiment of the present invention.
１ 帯状正極板 ２ 短冊状正極板 ３ 帯状負極板 ４ 短冊状負極板 ５ 微多孔膜ポリエチレンセパレーター ６ 角形容器 ７ 角形容器蓋 ８ 電池発電要素 ９ ガスケット １０ ステンレス製リベット端子 １１ 安全弁 1 strip-shaped positive electrode plate 2 strip-shaped positive electrode plate 3 strip-shaped negative electrode plate 4 strip-shaped negative electrode plate 5 microporous polyethylene separator 6 prismatic container 7 prismatic container lid 8 battery power generating element 9 gasket 10 stainless steel rivet terminal 11 safety valve
Claims (3)
備えたことを特徴とする角形電池。1. A prismatic battery comprising a strip-shaped electrode in the center of a wound strip-shaped electrode.
ターを介して長円状に巻回して角形電池ケースに収納し
た角形電池において、前記帯状電極は、短冊状電極の回
りを巻回していることを特徴とする角形電池。2. A prismatic battery in which a strip-shaped positive electrode plate and a strip-shaped negative electrode plate are wound in an oval shape with a separator interposed therebetween and housed in a prismatic battery case, wherein the strip-shaped electrode is wound around a strip-shaped electrode. The prismatic battery is characterized by being.
て巻回した帯状電極とからなる発電要素を備えたことを
特徴とする角形電池。3. A prismatic battery comprising a power generating element comprising a strip electrode and a strip electrode wound around the strip electrode as a winding core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5253813A JPH0785885A (en) | 1993-09-14 | 1993-09-14 | Rectangular battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5253813A JPH0785885A (en) | 1993-09-14 | 1993-09-14 | Rectangular battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0785885A true JPH0785885A (en) | 1995-03-31 |
Family
ID=17256502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5253813A Pending JPH0785885A (en) | 1993-09-14 | 1993-09-14 | Rectangular battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0785885A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010080427A (en) * | 2008-05-22 | 2010-04-08 | Panasonic Corp | Electrode group for secondary battery and secondary battery using the same |
| JP2011076785A (en) * | 2009-09-29 | 2011-04-14 | Hitachi Vehicle Energy Ltd | Rectangular lithium secondary battery |
| JP2011100591A (en) * | 2009-11-05 | 2011-05-19 | Hitachi Vehicle Energy Ltd | Square shape lithium secondary battery |
| JP2011134685A (en) * | 2009-12-25 | 2011-07-07 | Honda Motor Co Ltd | Secondary battery |
| US20140011062A1 (en) * | 2012-07-04 | 2014-01-09 | Samsung Sdi Co., Ltd. | Secondary battery |
| CN114204094A (en) * | 2020-09-17 | 2022-03-18 | 泰星能源解决方案有限公司 | Secondary battery and method for manufacturing secondary battery |
-
1993
- 1993-09-14 JP JP5253813A patent/JPH0785885A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010080427A (en) * | 2008-05-22 | 2010-04-08 | Panasonic Corp | Electrode group for secondary battery and secondary battery using the same |
| JP2011076785A (en) * | 2009-09-29 | 2011-04-14 | Hitachi Vehicle Energy Ltd | Rectangular lithium secondary battery |
| JP2011100591A (en) * | 2009-11-05 | 2011-05-19 | Hitachi Vehicle Energy Ltd | Square shape lithium secondary battery |
| JP2011134685A (en) * | 2009-12-25 | 2011-07-07 | Honda Motor Co Ltd | Secondary battery |
| US20140011062A1 (en) * | 2012-07-04 | 2014-01-09 | Samsung Sdi Co., Ltd. | Secondary battery |
| CN103531835A (en) * | 2012-07-04 | 2014-01-22 | 三星Sdi株式会社 | Secondary battery |
| US9413029B2 (en) * | 2012-07-04 | 2016-08-09 | Samsung Sdi Co., Ltd. | Secondary battery |
| CN114204094A (en) * | 2020-09-17 | 2022-03-18 | 泰星能源解决方案有限公司 | Secondary battery and method for manufacturing secondary battery |
| US11923512B2 (en) | 2020-09-17 | 2024-03-05 | Prime Planet Energy & Solutions, Inc. | Secondary battery and method for manufacturing secondary battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5498489A (en) | Rechargeable non-aqueous lithium battery having stacked electrochemical cells | |
| US6432576B1 (en) | Lithium secondary battery | |
| US6617074B1 (en) | Lithium ion polymer secondary battery and gelatinous polymer electrolyte for sheet battery | |
| JP3822445B2 (en) | Electrochemical devices | |
| JP2000030742A (en) | Lithium-ion secondary battery element | |
| JPH08171917A (en) | Cell | |
| JP3821434B2 (en) | Battery electrode group and non-aqueous electrolyte secondary battery using the same | |
| JP2001357855A (en) | Nonaqueous electrolyte secondary battery | |
| US6346343B1 (en) | Secondary lithium battery comprising lithium deposited on negative electrode material | |
| JP4590723B2 (en) | Winding electrode battery and method for manufacturing the same | |
| JPH1173943A (en) | Nonaqueous electrolyte secondary battery | |
| JP5337418B2 (en) | Non-aqueous electrolyte secondary battery | |
| JPH06310126A (en) | Nonaquous electrolytic secondary battery | |
| CN112234247A (en) | Lithium ion battery | |
| US20030134202A1 (en) | Lithium polymer battery | |
| JPH0785885A (en) | Rectangular battery | |
| JP2011198600A (en) | Electrode plate for battery and battery using the same | |
| JP2000021452A (en) | Nonaqueous electrolyte secondary battery | |
| GB2298309A (en) | Fan-folded lithium battery construction comprising lithium ion-containing polymer electrolyte sandwiched between discrete electrode plates | |
| JP2003077435A (en) | Battery pack | |
| JPH0574496A (en) | Secondary battery | |
| JP3166332B2 (en) | Thin non-aqueous electrolyte secondary battery and method of manufacturing the same | |
| JP2022549538A (en) | Electrochemical device and electronic device containing the electrochemical device | |
| JPH0855637A (en) | Nonaqueous electrolytic secondary battery | |
| CN112713301A (en) | Energy storage device |